The Secure Temp ASHT+ is one of the most extensively used factory-built venting systems in North America. It has been specially developed for use with oil- and gas-burning heating appliances and certified wood-burning fireplaces.
The Secure Seal flue is manufactured from AL29-4C, a super-ferritic stainless steel designed for extreme resistance to chloride ion pitting, crevice corrosion and stress corrosion cracking, as well as general corrosion in oxidizing and moderately reducing environments.
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